update template barrels to use 'export *', as seen in angular/angular-cli#863

hint: this behavior is not included in latest version of angular-cli, use master!
$ git clone https://github.com/angular/angular-cli.git angular-cli
$ cd angular-cli
$ git checkout 01e31ab71cb8f37474edac40f4636638738aee19
$ npm link

FYI:
@GregOnNet @d-koppenhagen @fmalcher

Author: JohannesHoppe

book-rating/src/app/app.component.ts

@@ -1,5 +1,5 @@
 import { Component } from '@angular/core';
-import { DashboardComponent} from './dashboard';
+import { DashboardComponent } from './dashboard';
 
 @Component({
   moduleId: module.id,

book-rating/src/app/book/index.ts

@@ -1 +1 @@
-export { BookComponent } from './book.component';
+export * from './book.component';

book-rating/src/app/dashboard/dashboard.component.ts

@@ -10,12 +10,13 @@ import { Book } from '../shared';
 })
 export class DashboardComponent implements OnInit {
 
-  book: Book;
+  books: Book[];
 
   constructor(){}
 
   ngOnInit() {
-    this.book = new Book('Bericht DWX 2016', 'Das haben wir erlebt');
+    this.books = [
+      new Book('Angular 2', 'Einstieg in die komponentenbasierte Entwicklung'),
+      new Book('Bericht DWX 2016', 'Das haben wir erlebt', 5)];
   }
-
 }

book-rating/src/app/dashboard/index.ts

@@ -1 +1 @@
-export { DashboardComponent } from './dashboard.component';
+export * from './dashboard.component';

book-rating/src/app/shared/book.ts

@@ -1,5 +1,5 @@
 export class Book {
-  constructor(public title: string, 
+  constructor(public title: string,
               public description: string,
               public rating: number = 0) { }
 }

book-rating/src/app/shared/index.ts

@@ -1 +1 @@
-export { Book } from './book';;
+export * from './book';